Car-truck.



P. L. BARBER & BTW. WEBB.

GAR TRUCK.

APPLICATION FILED $213.5, 1912.

Patented Oct. 1, 1912.

2 SHEETSSHEET 1.

F. L. BARBER & B. WEBB.

GAR TRUCK.

APPLICATION FILED rsn,s,1912.

Patented Oct. 1, 1912.

2 SHEETSSHEET 2.

A m/m I-Vihwssm/ Tnveniow UNITED strains PATENT OFFICE.

FRANKLIN I4. BARBER AND EDWIN W'. WEBB, OF CHICAGO, ILLINOIS, ASSIGNORSTO STANDARD CAR TRUCK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFNEW JnnsnY.

To all whom it may concern:

Be it known that we, FRANKLIN L. Bea BER and EDWIN W. WEBB, citizens ofthe United States, residing at Chicago, in the \county of Cook and Stateof Illinois, have whereby various improved results, herein-s after setfort-h, are obtained.

Generally stated, the invention consists of the novel devices andcombinations of devices hereinafter described and defined in the claims.

It is a well known fact that in car structures wherein the truck'bolstercarries its load through a center bearing, the top member or part of thesaid truck bolster acts in compression, while the bottom member'orportion of said bolster acts -iintension. Also,

it is a known fact that there is a point 111 the bolster between itscompression and tension members where the force or strain'is neutralizedand acts neither in compression nor in tension. This point is located onwhat is generally designated as a neutral axis of the bolster. The chieffeature of our invention resides in locating the center hearing belowthe top or compression member or portion and above the bottom or tensionmember or portion of the bolster and approximately at the neutral axisof the bolster. This novel arrangement or location of the center bearingin the bolster has several very important results or advantages. Thecenter bearing is placed where it does not take up space between thetruck bolster and the body bolster, and thus permits the use of a truckbolster of greater depth at its central portion, without raising thetruck bolster or the body of the car. In fact, the space between thetruck and body bolsters may be reduced and the truck bolster and carbody may be brought lower down than with the arrangements of cen-.

ter bearings hitherto provided." Also, the above novel arrangement ofthe center hearing permits the use of a large deep hub on CAR TRUCK.

Patented Oct. 1,1912.

Application filed February 5, 1912. Serial No. 675,602.

the body bolster which, in working through the top or compression memberof the truck bolster, takes the lateral thrusts, and when a roller orother anti-friction bearing is employed, relieves the same from suchlateral strains.

In the accompanying drawings which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view chiefly in elevation, butwith some parts sectioned and with some parts broken away, showing aportion of a car truck, a truck bolster and body bolster having a centerbearing applied in accordance with our invention; Fig. 2 is a plan viewof the truck bolster, some parts being broken away; and Fig. 3 is atransverse vertical section taken on the line m m on Fig. l.

The numeral 1 indicates a portion of a truck side frame having asuitably supported roller base or hearing 2 on which lateral motionroller devices 2 are shown as mounted, but which, however, constitute nopart of the present invention.

The numeral 3 indicates a body bolster having at its ceITtYal'portiOn, alarge and deep depending centering hub 4, which, at its lower end isformed with a convex spherical bearing surface.

The numeral 5 indicates a' truck bolster as an entirety, the same, asshown, being a cast structure having a top compression member 5" and abottom tension member 5". It should be here stated th 'at so far as thisinvention is concerned, the truck bolster may take various forms.

of the truck bolster is widened and is formed with a vertical hub seat 6through which the centering hub 4 of the body bolster-3 is passed. Itmay be here noted that the walls of this seatflare upwardly so as topermit the centerin hub 4 to wabble slightly or "to'perinit t e truckbolster to wabble slightly. in respect to the said hub.

The lower central portion of the bolster 5 is shown as in the form of ahollow box-like structure 7, and just above this-portion 7, the saidbolster is formed with a central opening 8, which opening is located onthe neutral axis of the said bolster.

In the construction illustrated, I have shown an anti-friction centerbearing made At its central portion, the top member 5 up of. a lowerbearing plate 9, the'upper bearing plate and interposed conical rollers11. The lower bearing plate 9 is seateddirectly on the box-likestructure'7 of the truck bolster 5, and is provided Witha depending boss12 seated in a depression formed in the top of the said parts 7. The

. rollers 11 engage with conical bearing surwith an outwardly projectinglower retaining flange 14: that underlaps the inner ends of the saidrollers. 0n its'top, the upper bearing plate 10 is formed with-a concavespherical bearmgsurface with which the spherical, bearing surface on thelower'end'of the cen teringhub 4 of the body. bolster is seated.

Obviously, so far as the present invehtion is concerned, theanti-friction hearing may take any suitable form. The construction isalso such that the-above noted parts 4, 7, 9 and 10 may have a center pmpassed therethrough, if ddsired, although this is not at allnecessary inthis improved construction.

By reference to Fig. 3, it will be noted that the concave bearingsurface of the upper roller bearing plate 10 is wider or of greaterdiameter than the corresponding convex sur-' face of the centering hub4. This permits .the truck and the bod' bolsters to assume slightlydifferent angu ar relations without effecting the relation of thebearing plates 9 and .10 and without perceptibly shifting the pressureof the weight upon the said upper bearing plate.

he car is securely held on center by the greater depth of the pivot ofthe centering hub or center. pivot-1t, and there is no possibility ofthe body bolster jumping from its seat in the truck bolster. All shocksdelivered to the truck through the draw bar will be absorbed by the saidcentering hub and will not be transmitted to the rollers of the centerbearing proper. The roller bearing device needs no rivets to seeureit tothe truck bolster and may be made of one stand- -ard for various heightsof cars, the variations being made in the centering hub. The parts ofthe anti-friction center bearing must be made of finer fit or betterworkmanship than the parts of the bolster, and as they are entirelydetachable from the truck bolster, this is made a simple and easymatter.

From inspection of Fig- 3, it is obvious that the parts of the centerbearing proper may be inserted in working position in the truck bolsteror' removed therefro'm,\.by movements through the open sides of thecentral opening 8.

What we claim is: l. A tritfckbolster having a center bearing made up ofupper and lower bearing plates and interposed rollers,the said centerbearing being applied to said bolster between the 1 top or compressionand the bottom or tension members thereof.

21A truck bolster havinga center bearing made up of upper and lowerbearing plates and interposed rollers, the said center bearing beingapplied to'said bolster with the axes of .saidrollers locatedapproximately in'the horizontahplane of the neutral axis of said truck'bolster.

. i 3'. A truck bolster having a center bearing made. up of cooperatingupper and lower bearing plates and interposed rollers, said centerbearing being located between the top and bottom members of saidbolster, in combination with a body bolster having a depending centeringhub depending through a vertical passage in the top member of said truckbolster and resting on the upper bearing plate of saidcenter bearing.

LA truck bolster having a center bearing made up of cooperating upperand lower bearing plates and interposed rollers, said center bearingbeing located between the top and bottom members of said bolster, incombination with a body bolster'having a depending centering hubdepending through a vertical passage 1n the top member of said truckbolsterand resting on the upper bearing plate of said center bearing,the engaging surface of said centering hub and upper bearing plate beingspherical and the said centering hub being capable of a slight wabblingmovement in respect to said truck bolster. v v v,

In testimony. whereof we afiix our signatures in presence of twowitnesses.

' FRANKLIN L. BARBER.

EDWIN W. WEBB. Witnesses: i

Leo -W. BARBER, E. E. SILK.

